[robertovillate]

That's a very minor hole.

If you can reach into the leading edge to apply a 1 x 1" dacron tape patch on the interior of the LE that should do it. Be careful you do not stick the tape to the bladder in the process.

The pressure from the LE ladder will do nicely to apply pressure and will keep the patch secure. If you apply a similar size patch on the outside that will clean up the frayed edges.

Sometimes the sail tape patches on the outside of leading edges will not hold as well because of the texture of the fabric, frequent handling or exposure to water, etc., The inner patch will be permanent and the strength of the surrounding material should be greater than before.

edit: Scott makes a good point...also, always round the corners of your patch, that helps alleviate the tendency for corners to lift. Burnish the patch and if possible inflate and leave in the sun. The heat helps the adhesives in the tape to bond and cure.